Orange not red planarians.

When my zoanthids arrived I dipped them in Coral Rx. After I found orange flatworms the size of a ink pen head in the container. I've searched high and low without any luck finding what species it could be. Somewhere on another reef forum someone said not all flatworms are bad. Any thoughts/knowledge?
 

Reef Bass

colors and textures
Yes, there are thousands of species of flatworms. Google says 20,000.

Red planaria are one. Sounds like yours is another. AEFW are another.

I would probably attempt eradication / removal.
 
Thank you. I dipped and scrubbed a second time and there are no signs of them. Could have been very tiny baby bristle worms. I need to order a microscope.
 
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